How to use windows scroll event ?

[regnoult axel]

Hello,

I am trying the following code in the constructor of a Presenter (cf. GWTP):

Window.addWindowScrollHandler(new Window.ScrollHandler() {

@Override

public void onWindowScroll(ScrollEvent event) {

Window.alert("SCROLLED");

}

});

...but it does not work. Should I write more code to have it running ?

Thanks you,